Trophic level-based indicators to track fishing impacts across marine ecosystems
2014
Shannon, Lynne | Coll, Marta | Bundy, Alida | Gascuel, Didier, D. | Heymans, Johanna J. | Kleisner, Kristin | Lynam, Christopher P. | Piroddi, Chiara | Tam, Jorge | Travers-Trolet, Morgane | Shin, Yunne | Marine Research Institute and Department of Biological Sciences ; University of Cape Town | Ecosystèmes Marins Exploités (UMR EME) ; Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM) | Ecopath International Initiative Research Association | Population Ecology Division ; Institut océanographique Bedford - Bedford Oceanographic Institute [Dartmouth, Canada] (IOB) | Écologie et santé des écosystèmes (ESE) ; Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST | Scottish Association for Marine Science (SAMS) | Lowestoft Laboratory ; Centre for Environment, Fisheries and Aquaculture Science (CEFAS) | Water Resources Unit [Ispra] ; JRC Institute for Environment and Sustainability (IES) ; European Commission - Joint Research Centre [Ispra] (JRC)-European Commission - Joint Research Centre [Ispra] (JRC) | Instituto del Mar del Peru (IMARPE) | Unité Écologie et Modèles pour l'Halieutique (EMH) ; Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) | South African Research Chair Initiative - South African Department of Science and Technology (DST) | European Commission through the Marie Curie CIG grant | Defra [M1228] | Spanish Research Program Ramon y Cajal | French project EMIBIOS (FRB) [APP-SCEN-2010-II] | European collaborative project MEECE - Marine Ecosystem Evolution in a Changing Environment - (FP7) [212085] | Fisheries and Oceans Canada SPERA project 'Ecosystem indicators for ecosystem monitoring at different scales' | Conservation International | University of British Columbia | Pew Charitable Trusts | EU FP7 project DEVOTES [308392]
International audience
اظهر المزيد [+] اقل [-]إنجليزي. Trophic level (TL)-based indicators have been widely used to examine fishing impacts in aquatic ecosystems and the induced biodiversity changes. However, much debate has ensued regarding discrepancies and challenges arising from the use of landings data from commercial fisheries to calculate TL indicators. Subsequent studies have started to examine survey-based and model-based indicators. In this paper, we undertake an extensive evaluation of a variety of TL indicators across 9 well-studied marine ecosystems by making use of model-as well as surveyand catch-based TL indicators. Using detailed regional information and data on fishing history, fishing intensity, and environmental conditions, we evaluate how well TL indicators are capturing fishing effects at the community level of marine ecosystems. Our results highlight that the differences observed between TL indicator values and trends is dependent on the data source and the TL cut-off point used in the calculations and is not attributable to an intrinsic problem with TL-based indicators. All 3 data sources provide useful information about the structural changes in the ecosystem as a result of fishing, but our results indicate that only model-based indicators represent fishing impacts at the whole ecosystem level.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Institut national de la recherche agronomique
